71915 ACE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71915 ACE/P4A
Basic Information
System of measurement
Metric
Weight
0.34 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.008mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4770 lbf
Radial static load rating
3600 lbf
Limiting speed
24 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 803.95
/ each
In Stock
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71915 ACE/P4A Bearing Product Overview & Core Advantages
The 71915 ACE/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing with a 25° contact angle, it is optimized to support combined loads, handling significant axial loads in one direction alongside radial loads. Manufactured to a P4 (ABEC-7) tolerance class, it guarantees minimal runout and superior performance. Its compact design, featuring a 16mm width, makes it ideal for high-speed spindles and other precision machinery where space is constrained and reliability is paramount.
71915 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing series and size designation (75mm bore, 105mm OD). |
| ACE | Specific internal design and contact angle (25°). |
| P4A | Indicates a P4 (ABEC-7) tolerance class and specific dimensional/geometric accuracy requirements. |
71915 ACE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and robust construction enable the bearing to withstand high combined loads, providing stable and rigid support for shafts.
- Superior High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 24,000 rpm. The bearing is pre-lubricated for immediate operation.
- Exceptional Precision: Manufactured to P4 precision class with tight dimensional tolerances on the bore, outside diameter, and width, ensuring minimal vibration and high running accuracy.
- Optimized Internal Geometry: The use of 23 high-grade chrome steel balls with a diameter of 9.525mm ensures smooth operation and contributes to the high dynamic and static load ratings.
71915 ACE/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring extreme accuracy and smooth operation.
- High-Frequency Motors and Spindles: Where minimal friction and high rotational speeds are critical.
- Medical and Dental Equipment: High-speed handpieces and diagnostic scanners.
- Robotics and Automation: Precision joints and arm assemblies.
